| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.sysds.runtime.lineage; |
| |
| import java.util.BitSet; |
| |
| public class LineagePath { |
| protected BitSet _lastBranch = null; |
| protected int _branchCounter = 0; |
| |
| |
| public void initLastBranch() { |
| _lastBranch = new BitSet(); |
| _branchCounter = 0; |
| } |
| |
| public void removeLastBranch() { |
| _lastBranch = null; |
| _branchCounter = 0; |
| } |
| |
| public void clearLastBranch() { |
| if (_lastBranch != null) |
| _lastBranch.clear(); |
| _branchCounter = 0; |
| } |
| |
| public void setBranchPredicateValue(boolean value) { |
| if (_lastBranch != null) { |
| _lastBranch.set(_branchCounter++, value); |
| } |
| } |
| |
| public Long getLastBranch() { |
| if (_lastBranch != null) |
| if (_lastBranch.toLongArray().length > 1) |
| throw new RuntimeException("Length of _lastBranch.toLongArray() exceeds 1!"); |
| else |
| return _lastBranch.toLongArray().length == 1 ? _lastBranch.toLongArray()[0] : 0L; |
| return 0L; |
| } |
| } |